system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-22 12:26:27 +00:00
Code Issues Packages Projects Releases Wiki Activity
linux/drivers/gpio
History
Linus Walleij fdd61a013a gpio: Add support for hierarchical IRQ domains 
Hierarchical IRQ domains can be used to stack different IRQ
controllers on top of each other.

Bring hierarchical IRQ domains into the GPIOLIB core with the
following basic idea:

Drivers that need their interrupts handled hierarchically
specify a callback to translate the child hardware IRQ and
IRQ type for each GPIO offset to a parent hardware IRQ and
parent hardware IRQ type.

Users have to pass the callback, fwnode, and parent irqdomain
before calling gpiochip_irqchip_add().

We use the new method of just filling in the struct
gpio_irq_chip before adding the gpiochip for all hierarchical
irqchips of this type.

The code path for device tree is pretty straight-forward,
while the code path for old boardfiles or anything else will
be more convoluted requireing upfront allocation of the
interrupts when adding the chip.

One specific use-case where this can be useful is if a power
management controller has top-level controls for wakeup
interrupts. In such cases, the power management controller can
be a parent to other interrupt controllers and program
additional registers when an IRQ has its wake capability
enabled or disabled.

The hierarchical irqchip helper code will only be available
when IRQ_DOMAIN_HIERARCHY is selected to GPIO chips using
this should select or depend on that symbol. When using
hierarchical IRQs, the parent interrupt controller must
also be hierarchical all the way up to the top interrupt
controller wireing directly into the CPU, so on systems
that do not have this we can get rid of all the extra
code for supporting hierarchical irqs.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: Jon Hunter <jonathanh@nvidia.com>
Cc: Sowjanya Komatineni <skomatineni@nvidia.com>
Cc: Bitan Biswas <bbiswas@nvidia.com>
Cc: linux-tegra@vger.kernel.org
Cc: David Daney <david.daney@cavium.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Brian Masney <masneyb@onstation.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Brian Masney <masneyb@onstation.org>
Co-developed-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190808123242.5359-1-linus.walleij@linaro.org
2019-08-15 09:44:19 +02:00
..
gpio-74x164.c gpio: 74x164: Convert to use SPDX identifier 2019-03-26 18:38:07 +01:00
gpio-74xx-mmio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-104-dio-48e.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-104-idi-48.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-104-idio-16.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-adnp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-adp5520.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
gpio-adp5588.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
gpio-altera-a10sr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-altera.c gpio: altera: Pass irqchip when adding gpiochip 2019-07-03 10:24:12 +02:00
gpio-amd-fch.c drivers: gpio: amd-fch: make resource struct const 2019-07-03 10:10:32 +02:00
gpio-amd8111.c gpio: amd8111: Include proper header 2018-01-13 22:22:49 +01:00
gpio-amdpt.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-arizona.c gpio: arizona: Use local copy of pdata 2019-08-05 11:42:29 +02:00
gpio-aspeed.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-ath79.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-bcm-kona.c drivers: gpio: bcm-kona: use devm_platform_ioremap_resource() 2019-04-05 00:04:25 +07:00
gpio-bd9571mwv.c
gpio-bd70528.c gpio: bd70528: remove redundant assignment to variable ret 2019-07-28 11:59:50 +02:00
gpio-brcmstb.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-bt8xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
gpio-cadence.c drivers: gpio: cadence: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-clps711x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-creg-snps.c GPIO: add single-register GPIO via CREG driver 2018-10-10 09:21:06 +02:00
gpio-crystalcove.c gpio: crystalcove: Convert to use SPDX identifier 2019-02-08 15:55:40 +02:00
gpio-cs5535.c docs: driver-model: move it to the driver-api book 2019-07-15 11:03:02 -03:00
gpio-da9052.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-da9055.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-davinci.c gpio: davinci: silence error prints in case of EPROBE_DEFER 2019-07-15 11:52:34 +02:00
gpio-dln2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
gpio-dwapb.c gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
gpio-eic-sprd.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-em.c gpio: em: remove the gpiochip before removing the irq domain 2019-07-15 11:52:42 +02:00
gpio-ep93xx.c gpio: ep93xx: Use devm_platform_ioremap_resource() 2019-06-27 15:56:51 +01:00
gpio-exar.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-f7188x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-ftgpio010.c gpio: ftgpio: Pass irqchip when adding gpiochip 2019-06-14 10:16:15 +02:00
gpio-ge.c gpio: ge: Fix build warning 2018-05-16 14:35:24 +02:00
gpio-gpio-mm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-grgpio.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-gw-pld.c gpio: Add a Gateworks PLD GPIO driver 2019-02-09 11:33:37 +01:00
gpio-hlwd.c drivers: gpio: hlwd: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-htc-egpio.c gpio: htc-egpio: Remove set but not used variable 'bit' 2018-10-01 12:27:19 +02:00
gpio-ich.c gpio: ich: Convert to use SPDX identifier 2018-12-07 17:34:07 +02:00
gpio-intel-mid.c gpio: intel-mid: Convert to use SPDX identifier 2018-12-07 17:34:07 +02:00
gpio-iop.c Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
gpio-it87.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 300 2019-06-05 17:37:00 +02:00
gpio-ixp4xx.c gpio: ixp4xx: Use irq_domain_translate_twocell() 2019-05-28 10:28:15 +02:00
gpio-janz-ttl.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-kempld.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 294 2019-06-05 17:36:38 +02:00
gpio-loongson.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-loongson1.c drivers: gpio: loongon1: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-lp873x.c gpio: lp873x: Include the right header 2018-05-16 14:35:24 +02:00
gpio-lp3943.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
gpio-lp87565.c
gpio-lpc18xx.c drivers: gpio: lpc18xx: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-lpc32xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
gpio-lynxpoint.c intel-gpio for v4.21-1 2018-12-14 14:27:41 +01:00
gpio-madera.c gpio: madera: Add support for Cirrus Logic CS47L92 2019-08-05 11:45:24 +02:00
gpio-max730x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max732x.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-max3191x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max7300.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max7301.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max77620.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-max77650.c gpio: max77650: add MODULE_ALIAS() 2019-07-29 00:03:52 +02:00
gpio-mb86s7x.c gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
gpio-mc9s08dz60.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
gpio-mc33880.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
gpio-menz127.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
gpio-merrifield.c gpio: merrifield: Fix build err without CONFIG_ACPI 2019-04-23 11:30:59 +02:00
gpio-ml-ioh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
gpio-mlxbf.c gpio: mlxbf: remove unused including <linux/version.h> 2019-04-08 08:47:06 +02:00
gpio-mm-lantiq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-mmio.c gpio: mmio: Drop bgpio_dir_inverted 2019-04-08 11:17:43 +02:00
gpio-mockup.c gpio: mockup: no need to check return value of debugfs_create functions 2019-06-27 15:54:19 +02:00
gpio-mpc8xxx.c gpio: mpc8xxx: Add ls1028a device specify function. 2019-08-03 00:15:03 +02:00
gpio-mpc5200.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
gpio-msic.c gpio: msic: Convert to use SPDX identifier 2019-02-08 15:55:41 +02:00
gpio-mt7621.c drivers: gpio: mt7621: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-mvebu.c gpio: pass lookup and descriptor flags to request_own 2019-06-07 23:20:23 +02:00
gpio-mxc.c drivers: gpio: mxc: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-mxs.c gpio: mxs: read pin level directly instead of using .get 2018-12-21 11:29:57 +01:00
gpio-octeon.c drivers: gpio: octeon: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-omap.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-palmas.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-pca953x.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-pcf857x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
gpio-pch.c PCI: Move Rohm Vendor ID to generic list 2019-02-01 17:24:52 -06:00
gpio-pci-idio-16.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-pcie-idio-24.c gpio: pcie-idio-24: Mask read inputs for get_multiple 2018-11-05 08:54:42 +01:00
gpio-pisosr.c gpio-pisosr: add support for get_multiple 2018-07-29 21:55:33 +02:00
gpio-pl061.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-pmic-eic-sprd.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-pxa.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-raspberrypi-exp.c gpio: raspberrypi-exp: decrease refcount on firmware dt node 2018-12-17 15:28:30 +01:00
gpio-rc5t583.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-rcar.c gpio: rcar: Pedantic formatting 2019-06-27 15:56:50 +01:00
gpio-rdc321x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
gpio-reg.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 233 2019-06-19 17:09:06 +02:00
gpio-sa1100.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-sama5d2-piobu.c gpio: sama5d2-piobu: Set proper output level for direction_output 2019-01-11 10:34:37 +01:00
gpio-sch.c gpio: sch: Remove write-only core_base 2019-04-23 13:08:33 +02:00
gpio-sch311x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-siox.c gpio: siox: Use devm_ managed gpiochip 2019-07-03 10:24:02 +02:00
gpio-sodaville.c gpio: sodaville: Convert to use SPDX identifier 2018-12-07 17:34:08 +02:00
gpio-spear-spics.c drivers: gpio: spear-spics: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-sprd.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-sta2x11.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
gpio-stmpe.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 464 2019-06-19 17:09:10 +02:00
gpio-stp-xway.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-syscon.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-tb10x.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-tc3589x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 464 2019-06-19 17:09:10 +02:00
gpio-tegra.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-tegra186.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 233 2019-06-19 17:09:06 +02:00
gpio-thunderx.c gpio: thunderx: Use the default parent apis for {request,release}_resources 2019-05-01 10:41:38 +01:00
gpio-timberdale.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
gpio-tpic2810.c
gpio-tps6586x.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65086.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65218.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 111 2019-05-24 17:39:01 +02:00
gpio-tps65910.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65912.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps68470.c gpio: tps68470: Update to SPDX license identifier 2018-02-23 15:26:42 +01:00
gpio-tqmx86.c gpio: tqmx86: Set proper output level for direction_output 2019-02-21 13:19:52 +01:00
gpio-ts4800.c drivers: gpio: ts4800: use devm_platform_ioremap_resource() 2019-04-05 00:04:28 +07:00
gpio-ts4900.c gpio: ts4900: Use of_device_get_match_data() 2018-05-16 14:35:24 +02:00
gpio-ts5500.c gpio: ts5500: Delete platform data handling 2018-09-04 08:22:47 +02:00
gpio-twl4030.c gpio: twl4030: Implement .get_direction() 2018-09-10 08:48:51 +02:00
gpio-twl6040.c gpio: twl6040: Implement .get_direction() 2018-09-10 08:49:22 +02:00
gpio-ucb1400.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-uniphier.c drivers: gpio: uniphier: use devm_platform_ioremap_resource() 2019-04-05 00:04:28 +07:00
gpio-vf610.c gpio: vf610: Use PTR_ERR_OR_ZERO() in vf610_gpio_probe() 2019-05-28 10:28:14 +02:00
gpio-viperboard.c gpio: viperboard: Replace 'unsigned' with 'unsigned int' 2019-08-05 11:26:58 +02:00
gpio-vr41xx.c gpio: vr41xx: Use devm_platform_ioremap_resource() 2019-06-27 15:56:51 +01:00
gpio-vx855.c gpio: vx855: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wcove.c gpio: wcove: Convert to use SPDX identifier 2019-02-08 15:55:41 +02:00
gpio-winbond.c gpio: winbond: Add driver 2018-01-09 14:51:00 +01:00
gpio-wm831x.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wm8350.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wm8994.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-ws16c48.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-xgene-sb.c gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
gpio-xgene.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
gpio-xilinx.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-xlp.c drivers: gpio: xlp: devm_platform_ioremap_resource() 2019-04-05 00:04:28 +07:00
gpio-xra1403.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-xtensa.c gpio: xtensa: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-zevio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-zx.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-zynq.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpiolib-acpi.c gpiolib-acpi: Move acpi_dev_add_driver_gpios() et al to consumer.h 2019-07-31 00:59:19 +02:00
gpiolib-acpi.h gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
gpiolib-devprop.c gpiolib: devprop: Fix syntax error 2019-04-08 11:20:12 +02:00
gpiolib-devres.c gpio: Add devm_gpiod_unhinge() 2018-12-11 01:04:23 +00:00
gpiolib-legacy.c gpio: Use SPDX header for core library 2018-09-25 09:08:48 +02:00
gpiolib-of.c gpio: of: Fix hard-assigned valid_mask for OF case 2019-08-01 10:04:16 +02:00
gpiolib-of.h gpio: of: Fix hard-assigned valid_mask for OF case 2019-08-01 10:04:16 +02:00
gpiolib-sysfs.c gpio: Use SPDX header for core library 2018-09-25 09:08:48 +02:00
gpiolib.c gpio: Add support for hierarchical IRQ domains 2019-08-15 09:44:19 +02:00
gpiolib.h gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
Kconfig docs conversion for v5.3-rc1 2019-07-16 12:21:41 -07:00
Makefile gpio: remove ks8695 driver 2019-08-10 11:02:53 +02:00
TODO gpio: Add GPIOLIB_IRQCHIP cleanup to TODO 2019-06-14 10:16:15 +02:00